81979480

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{186317}}^1$

素因数の和:186339

約数の個数: 32

約数和(自身を含む): 201223440

約数和(自身を除く): 119243960

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 186317, 372634, 745268, 931585, 1490536, 1863170, 2049487, 3726340, 4098974, 7452680, 8197948, 10247435, 16395896, 20494870, 40989740, 81979480]

約数ペア:

[(1, 81979480), (2, 40989740), (4, 20494870), (5, 16395896), (8, 10247435), (10, 8197948), (11, 7452680), (20, 4098974), (22, 3726340), (40, 2049487), (44, 1863170), (55, 1490536), (88, 931585), (110, 745268), (220, 372634), (440, 186317)]